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Interface engineering for improved light transmittance through photonic crystal flat lenses
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10.1063/1.3473760
/content/aip/journal/apl/97/7/10.1063/1.3473760
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/7/10.1063/1.3473760
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Schematic top view of the 2D PC lens covered with the triangular pattern. (b) Reflectivity of reference and optimized (ideal case for ) semi-infinite 2D PCs as functions of the angle of incidence. (c) SEM view of one fabricated optimized lens with the associated waveguide. A ray tracing corresponding to an effective negative index of is superimposed. (d) 2D FDTD simulations of the electric field intensity plane distribution at 1550 nm for the ideal optimized lens. (c) and (d) are plotted at the same scale.

Image of FIG. 2.
FIG. 2.

Unprocessed data SNOM pictures of the four optimized lenses at , plotted in illuminated view. Superimposed dotted lines reveal lenses interfaces position. For each picture, corresponding triangular pattern parameters and SEM view (plotted at the same scale as each other) are associated: (a) , , and ; (b) , , and ; (c) , , and ; (d) , , and .

Image of FIG. 3.
FIG. 3.

Local near-field spectroscopy of the optimized lens (, , and ) with the higher LTE: (a) schematic top view, (b) spectral response for the REF IN position, (c) spectral response for the image point, and (d) normalized spectral response (maximal value at ).

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/content/aip/journal/apl/97/7/10.1063/1.3473760
2010-08-20
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Interface engineering for improved light transmittance through photonic crystal flat lenses
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/7/10.1063/1.3473760
10.1063/1.3473760
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